package com.atguigu.gulimall.product.service.impl;

import com.atguigu.common.constant.product.ProductConstant;
import com.atguigu.common.to.SkuHasStockVo;
import com.atguigu.common.to.SkuReductionTo;
import com.atguigu.common.to.SpuBoundTo;
import com.atguigu.common.to.es.SkuEsModel;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;
import com.atguigu.common.utils.R;
import com.atguigu.gulimall.product.dao.SpuInfoDao;
import com.atguigu.gulimall.product.entity.*;
import com.atguigu.gulimall.product.feign.CouponFeignService;
import com.atguigu.gulimall.product.feign.SearchFeignService;
import com.atguigu.gulimall.product.feign.WareFeignService;
import com.atguigu.gulimall.product.service.*;
import com.atguigu.gulimall.product.vo.*;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;

import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.util.*;
import java.util.stream.Collectors;

@Slf4j
@Service("spuInfoService")
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {

    @Autowired
    SpuInfoDescService spuInfoDescService;
    @Autowired
    SpuImagesService imagesService;
    @Autowired
    AttrService attrService;
    @Autowired
    ProductAttrValueService productAttrValueService;
    @Autowired
    SkuInfoService skuInfoService;
    @Autowired
    SkuImagesService skuImagesService;
    @Autowired
    SkuSaleAttrValueService skuSaleAttrValueService;
    @Autowired
    CouponFeignService couponFeignService;
    @Autowired
    BrandService brandService;
    @Autowired
    CategoryService categoryService;
    @Autowired
    WareFeignService wareFeignService;

    @Autowired
    SearchFeignService searchFeignService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<SpuInfoEntity>()
        );

        return new PageUtils(page);
    }

    /**
     * //TODO 高级部分完善
     *
     * @param vo
     */
    @Transactional
    @Override
    public void saveSpuInfo(SpuSaveVo vo) {

        //1、保存spu基本信息
        SpuInfoEntity spuInfoEntity = new SpuInfoEntity();
        BeanUtils.copyProperties(vo, spuInfoEntity);
        spuInfoEntity.setCreateTime(new Date());
        spuInfoEntity.setUpdateTime(new Date());
        this.saveBaseSpuInfo(spuInfoEntity);
        //2、保存spu的描述图片
        List<String> decript = vo.getDecript();
        SpuInfoDescEntity descEntity = new SpuInfoDescEntity();
        descEntity.setSpuId(spuInfoEntity.getId());
        descEntity.setDecript(String.join(",", decript));
        spuInfoDescService.saveSpuInfoDesc(descEntity);

        //3、保存spu的图片集
        List<String> images = vo.getImages();
        imagesService.saveImages(spuInfoEntity.getId(), images);
        //4、保存spu的规格参数；pms_product_attr_value
        List<BaseAttrs> baseAttrs = vo.getBaseAttrs();
        List<ProductAttrValueEntity> collect = baseAttrs.stream().map(attr -> {
            ProductAttrValueEntity valueEntity = new ProductAttrValueEntity();
            valueEntity.setAttrId(attr.getAttrId());
            AttrEntity id = attrService.getById(attr.getAttrId());
            valueEntity.setAttrName(id.getAttrName());
            valueEntity.setAttrValue(attr.getAttrValues());
            valueEntity.setQuickShow(attr.getShowDesc());
            valueEntity.setSpuId(spuInfoEntity.getId());

            return valueEntity;
        }).collect(Collectors.toList());
        productAttrValueService.saveProductAttr(collect);

        //5、保存spu的积分信息；gulimall_sms->sms_spu_bounds
        Bounds bounds = vo.getBounds();
        SpuBoundTo spuBoundTo = new SpuBoundTo();
        BeanUtils.copyProperties(bounds, spuBoundTo);
        spuBoundTo.setSpuId(spuInfoEntity.getId());
        R r = couponFeignService.saveSpuBounds(spuBoundTo);
        if (r.getCode() != 0) {
            log.error("远程保存spu积分信息失败");
        }

        //5、保存当前spu对应的所有sku信息

        List<Skus> skus = vo.getSkus();
        if (skus != null && skus.size() > 0) {
            skus.forEach(item -> {
                String defaultImg = "";
                for (Images image : item.getImages()) {
                    if (image.getDefaultImg() == 1) {
                        defaultImg = image.getImgUrl();
                    }
                }

                SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
                BeanUtils.copyProperties(item, skuInfoEntity);
                skuInfoEntity.setBrandId(spuInfoEntity.getBrandId());
                skuInfoEntity.setCatalogId(spuInfoEntity.getCatalogId());
                skuInfoEntity.setSaleCount(0L);
                skuInfoEntity.setSpuId(spuInfoEntity.getId());
                skuInfoEntity.setSkuDefaultImg(defaultImg);
                //5.1）、sku的基本信息；pms_sku_info
                skuInfoService.saveSkuInfo(skuInfoEntity);
                //为每个sku加上skuId
                Long skuId = skuInfoEntity.getSkuId();
                List<SkuImagesEntity> imagesEntities = item.getImages().stream().map(img -> {
                    SkuImagesEntity skuImagesEntity = new SkuImagesEntity();
                    skuImagesEntity.setSkuId(skuId);
                    skuImagesEntity.setImgUrl(img.getImgUrl());
                    skuImagesEntity.setDefaultImg(img.getDefaultImg());
                    return skuImagesEntity;
                }).filter(img -> {
                    //返回true就是需要，false就是剔除
                    return StringUtils.isNotEmpty(img.getImgUrl());
                }).collect(Collectors.toList());
                //5.2）、sku的图片信息；pms_sku_images
                skuImagesService.saveBatch(imagesEntities);


                List<Attr> attr = item.getAttr();
                List<SkuSaleAttrValueEntity> skuSaleAttrValueEntities = attr.stream().map(a -> {
                    SkuSaleAttrValueEntity skuSaleAttrValueEntity = new SkuSaleAttrValueEntity();
                    BeanUtils.copyProperties(a, skuSaleAttrValueEntity);
                    skuSaleAttrValueEntity.setSkuId(skuId);

                    return skuSaleAttrValueEntity;
                }).collect(Collectors.toList());
                //5.3）、sku的销售属性；pms_sku_sale_attr
                skuSaleAttrValueService.saveBatch(skuSaleAttrValueEntities);

                //5.4）、sku的优惠，满减等信息；gulimall_sms->sms_sku_ladder\sms_sku_full_reduction\sms_member_price
                SkuReductionTo skuReductionTo = new SkuReductionTo();
                BeanUtils.copyProperties(item, skuReductionTo);
                skuReductionTo.setSkuId(skuId);
                if (skuReductionTo.getFullCount() > 0 || skuReductionTo.getFullPrice().compareTo(new BigDecimal("0")) == 1) {
                    couponFeignService.saveSkuReduction(skuReductionTo);
                    if (r.getCode() != 0) {
                        log.error("远程保存sku优惠信息失败");
                    }
                }


            });
        }


        //5.5）、sku的库存信息；gulimall_ware->wms_ware_sku
    }

    @Override
    public void saveBaseSpuInfo(SpuInfoEntity spuInfoEntity) {
        this.baseMapper.insert(spuInfoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        QueryWrapper<SpuInfoEntity> wrapper = new QueryWrapper<>();
        String key = (String) params.get("key");
        if (StringUtils.isNotEmpty(key)) {
            wrapper.and(w -> {
                w.eq("id", key).or().like("spu_name", key);
            });
        }
        String status = (String) params.get("status");
        if (StringUtils.isNotEmpty(status)) {
            wrapper.eq("publish_status", status);
        }
        String brandId = (String) params.get("brandId");
        if (StringUtils.isNotEmpty(brandId) && !"0".equalsIgnoreCase(brandId)) {
            wrapper.eq("brand_id", brandId);
        }
        String catelogId = (String) params.get("catelogId");
        if (StringUtils.isNotEmpty(catelogId) && !"0".equalsIgnoreCase(catelogId)) {
            wrapper.eq("catalog_id", catelogId);
        }

        IPage<SpuInfoEntity> page = this.page(new Query<SpuInfoEntity>().getPage(params), wrapper);

        return new PageUtils(page);
    }

    @Override
    public void up(Long spuId) {
        // 组装需要的数据
        // 1、查出当前spuid对应的所有sku信息
        List<SkuInfoEntity> skus = skuInfoService.getSkusBySpuId(spuId);
        List<Long> skuIds = skus.stream().map(SkuInfoEntity::getSkuId).collect(Collectors.toList());

        // 调用远程仓储服务，提前查出来，避免循环查库
        Map<Long, Boolean> stockMap = null;
        // todo 1、发送远程调用，库存系统查询是否有库存
        try {
            R<List<SkuHasStockVo>> r = wareFeignService.getSkuHasStock(skuIds);

            com.alibaba.fastjson.TypeReference<List<SkuHasStockVo>> typeRef =
                    new com.alibaba.fastjson.TypeReference<List<SkuHasStockVo>>() {
                    };

            List<SkuHasStockVo> stockVos = Optional.ofNullable(r.getData(typeRef))
                    .orElseGet(ArrayList::new);

            Map<Long, Boolean> resultMap = stockVos.stream()
                    .filter(Objects::nonNull)
                    .collect(Collectors.toMap(
                            SkuHasStockVo::getSkuId,
                            SkuHasStockVo::getHasStock,
                            (existing, replacement) -> existing,  // 冲突处理
                            HashMap::new                         // 指定Map实现
                    ));

            stockMap = resultMap;
        } catch (Exception e) {
            log.error("库存服务调用失败: {}", e.getMessage());
            stockMap = skuIds.stream().collect(Collectors.toMap(
                    id -> id,
                    id -> false  // 默认无库存
            ));
        }

        // 封装attrs
        // todo 4、查询当前sku所有可以被检索的规格属性
        List<ProductAttrValueEntity> attrsBySpuId = productAttrValueService.baseAttrlistforspu(spuId);
        List<Long> attrIds = attrsBySpuId.stream().map(ProductAttrValueEntity::getAttrId).collect(Collectors.toList());

        // 这是可被检索属性的id集合
        List<Long> searchAttrIds = attrService.selectSearchAttrs(attrIds);
        // 为了筛选出可被检索的商品attrs
        Set<Long> setAttrIds = new HashSet<>(searchAttrIds);
        // 拿到所有的可以被检索的商品属性关系表中数据，并提取出商品需要的attrs
        List<SkuEsModel.Attrs> attrsList = attrsBySpuId.stream()
                .filter(item -> setAttrIds.contains(item.getAttrId()))
                .map(item -> {
                    SkuEsModel.Attrs attrs = new SkuEsModel.Attrs();
                    BeanUtils.copyProperties(item, attrs);
                    return attrs;
                }).collect(Collectors.toList());

        // 封装每个sku信息
        Map<Long, Boolean> finalStockMap = stockMap;
        List<SkuEsModel> upProducts = skus.stream().map(sku -> {
            SkuEsModel skuEsModel = new SkuEsModel();
            BeanUtils.copyProperties(sku, skuEsModel);

            // skuPrice skuImg
            skuEsModel.setSkuPrice(sku.getPrice());
            skuEsModel.setSkuImg(sku.getSkuDefaultImg());

            // hasStock hotScore
            if (finalStockMap == null) {
                skuEsModel.setHasStock(true);
            } else {
                skuEsModel.setHasStock(finalStockMap.get(sku.getSkuId()));
            }
            // todo 2、热度评分。0
            skuEsModel.setHotScore(0L);

            // brandName brandImg
            // todo 3、查询品牌和分类的名字信息
            BrandEntity brand = brandService.getById(sku.getBrandId());
            if (brand != null) {
                skuEsModel.setBrandName(brand.getName());
                skuEsModel.setBrandImg(brand.getLogo());
            } else {
                log.error("品牌信息未找到，brandId: {}", sku.getBrandId());
                skuEsModel.setBrandName(null);
                skuEsModel.setBrandImg(null);
            }

            // catalogName
            CategoryEntity category = categoryService.getById(sku.getCatalogId());
            if (category != null) {
                skuEsModel.setCatalogName(category.getName());
            } else {
                log.error("分类信息未找到，catalogId: {}", sku.getCatalogId());
                skuEsModel.setCatalogName(null);
            }

            // 设置检索属性
            skuEsModel.setAttrs(attrsList);
            return skuEsModel;
        }).collect(Collectors.toList());

        // 远程调用上架商品
        // todo 5、将数据发送给es保存
        R r = searchFeignService.productStatusUp(upProducts);

        if (r.getCode() == 0) {
            // 远程调用成功
            // todo 更改spuinfo中商品的发布状态为已上架
            // 状态应该作为枚举类存在的
            baseMapper.updateSpuStatus(spuId, ProductConstant.StatusEnum.SPU_UP.getCode());
        } else {
            // 远程调用失败
            // todo 7、重复调用？接口幂等性；重试机制？xxx
            log.error("search远程调用失败");
        }
    }

    @Override
    public SpuInfoEntity getSpuInfoBySkuId(Long skuId) {

        SkuInfoEntity skuInfoEntity = skuInfoService.getById(skuId);
        Long spuId=skuInfoEntity.getSpuId();
        return this.getById(spuId);
    }


}